Underground travel

A Palestinian works inside a smuggling tunnel flooded by Egyptian forces, beneath the Egyptian-Gaza border in Rafah, in the southern Gaza Strip February 19, 2013. Egypt will not tolerate a two-way flow of smuggled arms with the Gaza Strip that is destabilizing its Sinai peninsula, a senior aide to its Islamist president said, explaining why Egyptian forces flooded sub-border tunnels last week.

A Palestinian works inside a smuggling tunnel flooded by Egyptian forces, beneath the Egyptian-Gaza border in Rafah, in the southern Gaza Strip February 19, 2013. Egypt will not tolerate a two-way flow of smuggled arms with the Gaza Strip that is destabilizing its Sinai peninsula, a senior aide to its Islamist president said, explaining why Egyptian forces flooded sub-border tunnels last week. (Ibraheem Abu Mustafa, Reuters)

A Palestinian works inside a smuggling tunnel flooded by Egyptian forces, beneath the Egyptian-Gaza border in Rafah, in the southern Gaza Strip February 19, 2013. Egypt will not tolerate a two-way flow of smuggled arms with the Gaza Strip that is destabilizing its Sinai peninsula, a senior aide to its Islamist president said, explaining why Egyptian forces flooded sub-border tunnels last week.Ibraheem Abu Mustafa, Reuters